IP Library Granted Patent US 8,615,928
Granted Patent B2
US 8,615,928 · App. 13/761,281 · Granted Dec 31, 2013

Safety gate

Inventor: Tsung-Hsiang Wang (New Taipei, TW)
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Quick Facts
Patent No.
US 8,615,928
App. No.
13/761,281
Granted
Dec 31, 2013
Kind
B2
Abstract

A safety gate has a doorframe, a fence door and a repositioning unit. The doorframe has a base frame, a first side frame, and a second side frame. The repositioning unit is mounted on a bottom of the fence door and has a repositioning recess. The repositioning recess selectively engages a top of the base frame and has two opposite guiding surfaces. When the fence door is open at an angle under 5 degrees relative to the doorframe, one of the guiding surfaces abuts a side of the top of the base frame. Because the guiding surface is curved and inclined relative to the fence door and because a distance between the guiding surfaces is decreased gradually, the guiding surface gradually rotates the fence door to close. As a result, the repositioning unit can close the fence door that is open slightly at a small angle.

Claims (151)

1. A safety gate comprising:

a doorframe having

a base frame having two ends;

a first side frame vertically mounted on one of the ends of the base frame; and

a second side frame vertically mounted on the other one of the ends of the base frame;

a fence door having

a first side rotatably connected to the first side frame in an axially moveable manner; and

a second side opposite to the first side; and

a repositioning unit mounted on a bottom of the fence door, being adjacent to the first side frame, and having

a repositioning recess formed in a bottom of the repositioning unit, being elongated along the fence door, communicating with an exterior environment via two ends of the repositioning unit, selectively engaging a top of the base frame and having

two guiding surfaces facing each other, being curved and inclined relative to the fence door; and

a distance between the guiding surfaces being decreased gradually along a direction from the first side frame to the second side frame, and being decreased gradually from bottom to top.

2. The safety gate as claimed in claim 1 , wherein

the doorframe has

an upper pivot seat mounted on a top of the first side frame, being hollow and having

an upper abutter formed on a top of a side of the upper pivot seat; and

an upper hole formed through the upper pivot seat and the upper abutter; and

a lower pivot seat mounted on the base frame, being adjacent to the first side frame, being hollow and having

a lower abutter formed on a top of a side of the lower pivot seat;

a lower hole formed through the lower pivot seat and the lower abutter; and

two lower inclines formed on a top of the lower abutter; and

the fence door has

an upper pivot unit mounted on a top of the fence door and having

an upper pivot formed on a center of a bottom of the upper pivot unit and rotatably mounted in the upper hole of the upper pivot seat;

an upper limit mounted on a bottom of the upper pivot and mounted in the upper pivot seat; and

an upper resilient element mounted around the upper pivot and abutting a top of the upper limit and a bottom of the upper abutter; and

a lower pivot unit mounted on the bottom of the fence door and having

a lower pivot formed on a center of a bottom of the lower pivot unit and rotatably mounted in the lower hole of the lower pivot seat; and

two lower ribs formed on the bottom of the lower pivot unit, having different heights and selectively abutting the lower inclines of the lower pivot seat.

3. The safety gate as claimed in claim 2 , wherein

the base frame has

a lock recess disposed in the top of the base frame; and

the fence door has

a lock plunger mounted on the bottom of the fence door, being adjacent to the second side frame and selectively engaging in the lock recess of the base frame.

4. The safety gate as claimed in claim 3 , wherein

the second side frame has

a first hole disposed in a side of the second side frame and being adjacent to a top of the second side frame;

the fence door has

a lock assembly mounted on the second side of the fence door and having

a first latch being telescopic and selectively mounted in the first hole of the second side frame.

5. The safety gate as claimed in claim 4 , wherein

the second side frame has

a second hole disposed in the side of the second side frame;

the lock assembly has

a second latch being telescopic and selectively mounted in the second hole of the second side frame.

6. The safety gate as claimed in claim 1 , wherein

the doorframe has

an upper pivot seat mounted on a top of the first side frame, being hollow and having

an upper abutter formed on a top of a side of the upper pivot seat;

an upper hole formed through the upper pivot seat and the upper abutter; and

two upper inclines formed on a top of the upper abutter; and

the fence door has

an upper pivot unit mounted on a top of the fence door and having

an upper pivot formed on a center of a bottom of the upper pivot unit and rotatably mounted in the upper hole of the upper pivot seat;

two upper ribs formed on the bottom of the upper pivot unit, having different heights and selectively abutting the upper inclines of the upper pivot seat;

an upper limit mounted on a bottom of the upper pivot and mounted in the upper pivot seat; and

an upper resilient element mounted around the upper pivot and abutting a top of the upper limit and a bottom of the upper abutter.

7. The safety gate as claimed in claim 6 , wherein a bottom end of a side of the first side frame is pivotally connected to a bottom end of the first side of the fence door.

8. The safety gate as claimed in claim 1 , wherein

the base frame has

a lock recess disposed in the top of the base frame; and

the fence door has

a lock plunger mounted on the bottom of the fence door, being adjacent to the second side frame and selectively engaging in the lock recess of the base frame.

9. The safety gate as claimed in claim 1 , wherein

the second side frame has

a first hole disposed in a side of the second side frame and being adjacent to a top of the second side frame;

the fence door has

a lock assembly mounted on the second side of the fence door and having

a first latch being telescopic and selectively mounted in the first hole of the second side frame.

10. The safety gate as claimed in claim 9 , wherein

the second side frame has

a second hole disposed in the side of the second side frame;

the lock assembly has

a second latch being telescopic and selectively mounted in the second hole of the second side frame.

11. A safety gate comprising:

a doorframe having

a base frame having two ends;

a first side frame vertically mounted on one of the ends of the base frame; and

a second side frame vertically mounted on the other one of the ends of the base frame;

a fence door having

a first side rotatably connected to the first side frame in an axially moveable manner; and

a second side opposite to the first side;

a repositioning seat mounted on a top of the base frame, being adjacent to the first side frame, and having

a repositioning protrusion formed on a top of the repositioning seat and being elongated along the base frame; and

a width of the repositioning protrusion being decreased gradually along a direction from the second side frame to the first side frame; and

a repositioning unit mounted on a bottom of the fence door, being adjacent to the first side frame, and having

a repositioning recess formed in a bottom of the repositioning unit, being elongated along the fence door, communicating with an exterior environment via two ends of the repositioning unit, selectively engaging the repositioning protrusion of the repositioning seat, and having

two guiding surfaces facing each other, being curved and inclined relative to the fence door; and

a distance between the guiding surfaces being decreased gradually along a direction from the first side frame to the second side frame, and being decreased gradually from bottom to top.

12. The safety gate as claimed in claim 11 , wherein

the doorframe has

an upper pivot seat mounted on a top of the first side frame, being hollow and having

an upper abutter formed on a top of a side of the upper pivot seat; and

an upper hole formed through the upper pivot seat and the upper abutter; and

a lower pivot seat mounted on the base frame, being adjacent to the first side frame, being hollow and having

a lower abutter formed on a top of a side of the lower pivot seat;

a lower hole formed through the lower pivot seat and the lower abutter; and

two lower inclines formed on a top of the lower abutter; and

the fence door has

an upper pivot unit mounted on a top of the fence door and having

an upper pivot formed on a center of a bottom of the upper pivot unit and rotatably mounted in the upper hole of the upper pivot seat;

an upper limit mounted on a bottom of the upper pivot and mounted in the upper pivot seat; and

an upper resilient element mounted around the upper pivot and abutting a top of the upper limit and a bottom of the upper abutter; and

a lower pivot unit mounted on the bottom of the fence door and having

a lower pivot formed on a center of a bottom of the lower pivot unit and rotatably mounted in the lower hole of the lower pivot seat; and

two lower ribs formed on the bottom of the lower pivot unit, having different heights and selectively abutting the lower inclines of the lower pivot seat.

13. The safety gate as claimed in claim 12 , wherein

the base frame has

a lock recess disposed in the top of the base frame; and

the fence door has

a lock plunger mounted on the bottom of the fence door, being adjacent to the second side frame and selectively engaging in the lock recess of the base frame.

14. The safety gate as claimed in claim 13 , wherein

the second side frame has

a first hole disposed in a side of the second side frame and being adjacent to a top of the second side frame;

the fence door has

a lock assembly mounted on the second side of the fence door and having

a first latch being telescopic and selectively mounted in the first hole of the second side frame.

15. The safety gate as claimed in claim 14 , wherein

the second side frame has

a second hole disposed in the side of the second side frame;

the lock assembly has

a second latch being telescopic and selectively mounted in the second hole of the second side frame.

16. The safety gate as claimed in claim 11 , wherein

the doorframe has

an upper pivot seat mounted on a top of the first side frame, being hollow and having

an upper abutter formed on a top of a side of the upper pivot seat;

an upper hole formed through the upper pivot seat and the upper abutter; and

two upper inclines formed on a top of the upper abutter; and

the fence door has

an upper pivot unit mounted on a top of the fence door and having

an upper pivot formed on a center of a bottom of the upper pivot unit and rotatably mounted in the upper hole of the upper pivot seat;

two upper ribs formed on the bottom of the upper pivot unit, having different heights and selectively abutting the upper inclines of the upper pivot seat;

an upper limit mounted on a bottom of the upper pivot and mounted in the upper pivot seat; and

an upper resilient element mounted around the upper pivot and abutting a top of the upper limit and a bottom of the upper abutter.

17. The safety gate as claimed in claim 16 , wherein a bottom end of a side of the first side frame is pivotally connected to a bottom end of the first side of the fence door.

18. The safety gate as claimed in claim 11 , wherein

the base frame has

a lock recess disposed in the top of the base frame; and

the fence door has

a lock plunger mounted on the bottom of the fence door, being adjacent to the second side frame and selectively engaging in the lock recess of the base frame.

19. The safety gate as claimed in claim 11 , wherein

the second side frame has

a first hole disposed in a side of the second side frame and being adjacent to a top of the second side frame;

the fence door has

a lock assembly mounted on the second side of the fence door and having

a first latch being telescopic and selectively mounted in the first hole of the second side frame.

20. The safety gate as claimed in claim 19 , wherein

the second side frame has

a second hole disposed in the side of the second side frame;

the lock assembly has

a second latch being telescopic and selectively mounted in the second hole of the second side frame.

Priority Claims (1)
CN 2012 2 0060668 · Feb 23, 2012 · national
Continuity (1)
Related Publication 20130221304A1 · Aug 29, 2013