IP Library › Granted Patent US 12,370,710
Granted Patent B2
US 12,370,710 · App. 18/132,766 · Granted Jul 29, 2025

Shaving device

Inventors: Ruairidh Robertson (Sandwich, MA); David Carpenter (Jaffrey, NH); Alan Kenneth Stratton (Milford, NH); George K. Bonnoitt (Amherst, NH)
Assignee: INSIGNIA IP DEVELOPMENT COMPANY LLC
B26B21/521B26B21/10B26B21/225B26B21/24B26B21/4012B26B21/4062B26B21/443B26B21/52B26B21/523B26B21/16B26B21/20B26B21/28B26B21/4018
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Quick Facts
Patent No.
US 12,370,710
App. No.
18/132,766
Granted
Jul 29, 2025
Kind
B2
Abstract

A shaving device comprising a head assembly including a support member having at least one support member magnet and a blade cartridge having at least one face with at least one razor blade and configured to be rotatably coupled to the support member about a pivot axis. The blade cartridge includes at least one blade cartridge magnet having a pole aligned with a pole of the support member magnet to generate a magnetic force that urges the blade cartridge about the pivot axis towards an initial starting position (ISP), wherein the blade cartridge is further configured to rotate about the pivot axis away from the ISP upon application of an external force sufficient to overcome the magnetic force between the support member magnet and the blade cartridge magnet.

Claims (43)

1. A shaving device comprising:

a head assembly comprising:

a first arm and a second arm;

a first magnet fixedly secured to said first arm;

a second magnet fixedly secured to said second arm;

a blade cartridge including a first end region, a second opposite end region, and a first face with at least one razor blade disposed at least partially between the first and second end region, said blade cartridge configured to rotate about a pivot axis that extends through said first and said second end regions and said first and said second arms;

a third and a fourth magnet configured to rotate about said pivot axis;

wherein said first and said second magnets are configured to generate a magnetic force with said third and said fourth magnet, respectively, to urge said blade cartridge towards an initial starting position.

2. The shaving device of claim 1 , wherein said first and said third magnets are aligned to generate an attractive magnetic force.

3. The shaving device of claim 1 , further comprising at least one initial starting position (ISP) protrusion configured to establish said initial staring position (ISP) of said blade cartridge, wherein said ISP protrusion extends towards and engages said first arm.

4. The shaving device of claim 1 , further comprising at least one initial starting position (ISP) protrusion configured to establish said initial starting position (ISP) of said blade cartridge, wherein said ISP protrusion extends outwardly from said first arm.

5. The shaving device of claim 1 , wherein said first and said second arm comprise a first and a second pin receptacle, respectively,

wherein blade cartridge further comprises one or more pivot pins extending outward from said first and second opposite end regions of said blade cartridge along said pivot axis and configured to be received in said first and said second pin receptacle.

6. The shaving device of claim 1 , wherein said first and said second magnets and said third and said fourth magnets are configured to generate a magnetic force that releasably couples said blade cartridge to said first and said second arms.

7. The shaving device of claim 1 , wherein said pivot axis extends parallel to said at least one razor blade.

8. The shaving device of claim 1 , wherein said head assembly is removably coupled to a handle.

9. The shaving device of claim 8 , further comprising a magnetic connection configured to removably couple said head assembly to the handle.

10. A shaving device comprising:

a first arm and a second arm;

a first magnet fixedly secured to said first arm;

a blade cartridge having a first and a second opposite end regions and a first and a second face each with at least one razor blade, said blade cartridge configured to rotate 360 degrees about a pivot axis extending through said first and said second end regions and said first and said second arms;

a second and a third magnet configured to rotate about said pivot axis with said blade cartridge and to be disposed on a first and a second opposite side of said pivot axis;

wherein said second and said third magnets are configured to generate a first and a second magnetic force, respectively, that urges said blade cartridge towards a first and a second initial starting position, respectively.

11. The shaving device of claim 10 , wherein said first and said third magnets are aligned to generate an attractive magnetic force.

12. A shaving device comprising:

a handle;

a support member comprising a first and a second arm;

a blade cartridge including a first end region, a second end region opposite the first end region, a first face having at least one razor blade disposed at least partially between the first and second end region, and a second face, the blade cartridge configured rotate about a pivot axis that extends through the first and the second end regions and the first and the second arm;

a first arm magnet disposed on the first arm and configured to face towards the first end region of the blade cartridge when the blade cartridge is secured to the shaving device;

a first biasing magnet spaced apart from and configured to face the first arm, the first biasing magnet configured to rotate with the blade cartridge when the blade cartridge is secured to the shaving device; and

a second biasing magnet spaced apart from and configured to face the first arm, the second biasing magnet configured to rotate with the blade cartridge when the blade cartridge is secured to the shaving device;

wherein the first biasing magnet is configured to generate a first magnetic force with the first arm magnet to urge the blade cartridge towards a first blade face position corresponding to the first face; and

wherein the second biasing magnet is configured to generate a second magnetic force with the first arm magnet to urge the blade cartridge towards a second blade face position corresponding to the second face.

13. The shaving device of claim 12 , wherein the first and the second biasing magnets are disposed on opposite sides of the pivot axis.

14. The shaving device of claim 12 , wherein the blade cartridge is configured to be removably coupled to the support member.

15. The shaving device of claim 12 , further comprising:

a second arm magnet disposed on the second arm and configured to face towards the second end region of the blade cartridge when the blade cartridge is secured to the shaving device;

a third biasing magnet spaced apart from and configured to face the second arm, the third biasing magnet configured to rotate with the blade cartridge when the blade cartridge is secured to the shaving device; and

a fourth biasing magnet spaced apart from and configured to face the second arm, the fourth biasing magnet configured to rotate with the blade cartridge when the blade cartridge is secured to the shaving device

wherein the third biasing magnet is configured to generate a third magnetic force with the second arm magnet to urge the blade cartridge towards the first blade face position; and

wherein the fourth biasing magnet is configured to generate a fourth magnetic force with the second arm magnet to urge the blade cartridge towards the second blade face position.

16. The shaving device of claim 15 , wherein the third and the fourth biasing magnets are disposed on opposite sides of the pivot axis.

17. The shaving device of claim 15 , wherein the second face includes at least one razor blade disposed at least partially between the first and second end region.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 26, 2025
From: ROBERTSON, RUAIRIDH
To: INSIGNIA IP HOLDING COMPANY, LLC
Reel/Frame 070329/0437 →
CHANGE OF NAME Recorded Apr 18, 2023
From: INSIGNIA IP HOLDING COMPANY, LLC
To: INSIGNIA IP DEVELOPMENT COMPANY, LLC
Reel/Frame 063363/0678 →
Continuity (10)
Continuation 17303246 · May 25, 2021
Continuation 15433988 · Feb 15, 2017
Continuation In Part 15241042 · Aug 18, 2016
Continuation In Part 15135485 · Apr 21, 2016
Continuation In Part 14977560 · Dec 21, 2015
Continuation In Part 14873857 · Oct 2, 2015
Continuation 14627282 · Feb 20, 2015
Provisional Application 62060700 · Oct 7, 2014
Provisional Application 62201551 · Aug 5, 2015
Related Publication 20240075642A1 · Mar 7, 2024
References Cited (134)
US 3740841A · Risher · 1973 [cited by examiner]
US 5167069A · Quinn · 1992 [cited by applicant]
US 5343622A · Andrews · 1994 [cited by applicant]
US 5522137A · Andrews · 1996 [cited by applicant]
US 5575068A · Pedersen · 1996 [cited by applicant]
US D388540S · Ramar · 1997 [cited by applicant]
US 5911480A · Morgan · 1999 [cited by applicant]
US 6082007A · Andrews · 2000 [cited by applicant]
US 6115924A · Oldroyd · 2000 [cited by applicant]
US 6125542A · Somma · 2000 [cited by applicant]
US 6161288A · Andrews · 2000 [cited by applicant]
US 6189222B1 · Doyle · 2001 [cited by applicant]
US 6266888B1 · Zowaski · 2001 [cited by applicant]
US 6434828B1 · Andrews · 2002 [cited by applicant]
US 6725550B1 · Shah · 2004 [cited by applicant]
US 6915580B2 · Dassel · 2005 [cited by applicant]
US 7086160B2 · Coffin et al. · 2006 [cited by applicant]
US 7140116B2 · Coffin · 2006 [cited by applicant]
US 7578062B2 · Blackburn · 2009 [cited by applicant]
US 7895754B2 · Blackburn · 2011 [cited by applicant]
US 7913393B2 · Royle et al. · 2011 [cited by applicant]
US 7937837B2 · Psimadas et al. · 2011 [cited by applicant]
US 8122606B2 · Hart · 2012 [cited by applicant]
US D656677S · Cavazos Jimenez et al. · 2012 [cited by applicant]
US D659285S · Lukan et al. · 2012 [cited by applicant]
US 8205343B2 · Winter et al. · 2012 [cited by applicant]
US D664712S · Christie et al. · 2012 [cited by applicant]
US 8474144B2 · Royle · 2013 [cited by applicant]
US 8567068B2 · Luxton · 2013 [cited by applicant]
US 8595938B2 · Bodet · 2013 [cited by applicant]
US D700995S · Lee et al. · 2014 [cited by applicant]
US 8745876B2 · Hage et al. · 2014 [cited by applicant]
US 8745883B2 · Murgida et al. · 2014 [cited by applicant]
US 9032631B2 · Christie et al. · 2015 [cited by applicant]
US D749264S · Leatherman et al. · 2016 [cited by applicant]
US D749267S · Letherman · 2016 [cited by applicant]
US 9259846B1 · Robertson · 2016 [cited by applicant]
US 9522472B2 · Leicht et al. · 2016 [cited by applicant]
US 9550303B2 · Robertson et al. · 2017 [cited by applicant]
US 9687989B2 · Robertson et al. · 2017 [cited by applicant]
US 9764487B2 · Robertson et al. · 2017 [cited by applicant]
US 9808945B2 · Robertson · 2017 [cited by applicant]
US D806950S · Robertson · 2018 [cited by applicant]
US 20050034314A1 · Cuisinier · 2005 [cited by applicant]
US 20050138814A1 · Pennella et al. · 2005 [cited by applicant]
US 20050198840A1 · Worrick, III et al. · 2005 [cited by applicant]
US 20050198841A1 · Worrick, III · 2005 [cited by applicant]
US 20070089960A1 · Kanehisa · 2007 [cited by applicant]
US 20080155831A1 · Royle · 2008 [cited by applicant]
US 20090013534A1 · Mallaridas · 2009 [cited by applicant]
US 20100083505A1 · Royle et al. · 2010 [cited by applicant]
US 20100101093A1 · Avans et al. · 2010 [cited by applicant]
US 20110146079A1 · Clarke et al. · 2011 [cited by applicant]
US 20110277326A1 · Bodet · 2011 [cited by applicant]
US 20110283539A1 · Bryan · 2011 [cited by applicant]
US 20120198698A1 · Szczepanowski et al. · 2012 [cited by applicant]
US 20120255185A1 · Patel et al. · 2012 [cited by applicant]
US 20120311865A1 · Hamilton et al. · 2012 [cited by applicant]
US 20130152400A1 · Nunez · 2013 [cited by applicant]
US 20130312265A1 · Wilson · 2013 [cited by examiner]
US 20130312272A1 · Wilson et al. · 2013 [cited by applicant]
US 20140026726A1 · Griffin et al. · 2014 [cited by applicant]
US 20140083265A1 · Provost et al. · 2014 [cited by applicant]
US 20140096402A1 · Nakasuka et al. · 2014 [cited by applicant]
US 20140116211A1 · Griffin et al. · 2014 [cited by applicant]
US 20140165800A1 · Griffin et al. · 2014 [cited by applicant]
US 20140237830A1 · Wilson et al. · 2014 [cited by applicant]
US 20150090085A1 · Griffin et al. · 2015 [cited by applicant]
US 20150157109A1 · Provost et al. · 2015 [cited by applicant]
US 20150158192A1 · Tucker et al. · 2015 [cited by applicant]
US 20150174775A1 · Hodgson · 2015 [cited by applicant]
US 20150174776A1 · Hawes · 2015 [cited by applicant]
US 20150190935A1 · Griffin et al. · 2015 [cited by applicant]
US 20150190936A1 · Griffin et al. · 2015 [cited by applicant]
US 20150321366A1 · Papadopoulos-Papageorgis et al. · 2015 [cited by applicant]
US 20160096280A1 · Robertson · 2016 [cited by applicant]
US 20160107324A1 · Robertson · 2016 [cited by applicant]
US 20170021513A1 · Liberatore · 2017 [cited by applicant]
US 20170043492A1 · Robertson et al. · 2017 [cited by applicant]
US 20170282387A1 · Robertson et al. · 2017 [cited by applicant]
US 20170291320A1 · Robertson et al. · 2017 [cited by applicant]
US 20170361481A1 · Robertson et al. · 2017 [cited by applicant]
US 20180001496A1 · Robertson et al. · 2018 [cited by applicant]
US 20220055240A1 · Wilson et al. · 2022 [cited by applicant]
CN 2074705U · 1991 [cited by applicant]
CN 103648735A · 2014 [cited by applicant]
CN 104582913A · 2015 [cited by applicant]
DE 102009050344A1 · 2011 [cited by applicant]
EP 2379289 · 2011 [cited by applicant]
RU 2441746C2 · 2012 [cited by applicant]
WO 9727030 · 1997 [cited by applicant]
WO 03095162 · 2003 [cited by applicant]
WO 2008085002 · 2008 [cited by applicant]
WO 2013148480 · 2013 [cited by applicant]
WO 2013165954 · 2013 [cited by applicant]
WO 2015134700 · 2015 [cited by applicant]
WO 2016057066 · 2016 [cited by applicant]
WO 2017024156 · 2017 [cited by applicant]
Office Action dated Apr. 9, 2015, issued in U.S. Appl. No. 14/627,282, 15 pages. [cited by applicant]
International Search Report and Written Opinion dated May 15, 2015, issued in PCT Patent Application No. PCT/US15/16767, 14 pages. [cited by applicant]
Notice of Allowance dated Aug. 14, 2015, issued in U.S. Appl. No. 14/627,282, 11 pages. [cited by applicant]
Office Action dated Mar. 24, 2016, issued in U.S. Appl. No. 14/873,857, 12 pages. [cited by applicant]
Office Action dated Jun. 15, 2016, issued in U.S. Appl. No. 14/977,560, 13 pages. [cited by applicant]
Final Office Action dated Jul. 27, 2016, issued in U.S. Appl. No. 14/873,857, 13 pages. [cited by applicant]
Notice of Allowance dated Sep. 1, 2016, issued in U.S. Appl. No. 14/977,560, 10 pages. [cited by applicant]
International Search Report and Written Opinion dated Oct. 14, 2016, issued in PCT International Patent Application No. PCT/US2016/045591, 10 pages. [cited by applicant]
Office Action dated Sep. 21, 2016, issued in U.S. Appl. No. 15/135,485, 19 pages. [cited by applicant]
U.S. Office Action dated Dec. 15, 2016, issued in U.S. Appl. No. 14/873,857, 21 pages. [cited by applicant]
U.S. Notice of Allowance dated Feb. 9, 2017, issued in U.S. Appl. No. 15/135,485, 12 pages. [cited by applicant]
U.S. Office Action dated Feb. 22, 2017, issued in U.S. Appl. No. 15/241,042, 13 pages. [cited by applicant]
U.S. Notice of Allowance dated Apr. 10, 2017, issued in U.S. Appl. No. 15/241,042, 13 pages. [cited by applicant]
Preliminary Report on Patentability dated Apr. 20, 2017, issued in PCT Patent Application No. PCT/US2015/016767, 12 pages. [cited by applicant]
Preliminary Report on Patentability dated Apr. 20, 2017, issued in PCT Patent Application No. PCT/US2015/054155, 6 pages. [cited by applicant]
U.S. Final Office Action dated May 4, 2017, issued in U.S. Appl. No. 14/873,857, 17 pages. [cited by applicant]
Notice of Allowance mailed Jul. 28, 2017, issued in U.S. Appl. No. 14/873,857, 15 pages. [cited by applicant]
U.S. Office Action mailed May 21, 2018, issued in U.S. Appl. No. 15/716,504, 13 pages. [cited by applicant]
U.S. Office Action mailed May 22, 2018, issued in U.S. Appl. No. 15/708,635, 12 pages. [cited by applicant]
U.S. Notice of Allowance mailed Aug. 7, 2018, issued in U.S. Appl. No. 15/716,504, 11 pages. [cited by applicant]
U.S. Office Action mailed Jan. 10, 2018, issued in U.S. Appl. No. 15/628,082, 19 pages. [cited by applicant]
International Search Report and Written Opinion mailed Oct. 25, 2017, issued in PCT Patent Application No. PCT/US2017/047496, 8 pages. [cited by applicant]
Notice of Allowance mailed Jan. 12, 2021, issued in U.S. Appl. No. 15/433,988. [cited by applicant]
U.S. Office Action mailed Nov. 24, 2021, received in U.S. Appl. No. 15/708,635. [cited by applicant]
U.S. Office Action mailed Dec. 7, 2021, received in U.S. Appl. No. 16/871,544. [cited by applicant]
U.S. Office Action mailed May 12, 2021, received in U.S. Appl. No. 15/708,635. [cited by applicant]
Indian Office Action with English translation issued May 31, 2021, received in Indian Patent Application No. 201927010292. [cited by applicant]
Brazilian Office Action with English translation issued Jun. 15, 2021, received in Brazil Patent Application No. BR12-2020-015146-3. [cited by applicant]
Brazilian Office Action with English translation issued Jul. 21, 2021, received in Brazil Patent Application No. BR11-2019-003255-0. [cited by applicant]
Chinese Office Action with English translation issued Jul. 21, 2021, received in Chinese Patent Application No. CN201780060517.1. [cited by applicant]
Japan Office Action from related application 2021-131391 mailed Aug. 30, 2022, with English translation. [cited by applicant]
Canada Office Action from related application 2,994,679 mailed Nov. 3, 2022. [cited by applicant]
Brazil Office Action from related application BR112019003255-0 mailed Aug. 9, 2022 with English translation. [cited by applicant]
First Examination Report from related Indian Appln. No. 202128020189, dated May 31, 2022, with English translation. [cited by applicant]
First Office Action from related Chinese Appln. No. 202110190114.7, dated Jun. 2, 2022. English translation attached. [cited by applicant]
European Office Action from related application 20156592.6 dated Jun. 2, 2022. [cited by applicant]