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A scissor jack assembly may have a base member for resting the jack assembly against a supporting surface and a support bracket assembly. First and second lower arm members may each be of an open channel construction with a width extending between a pair of outer sidewalls. One end of each lower arm

A scissor jack assembly may have a base member for resting the jack assembly against a supporting surface and a support bracket assembly. First and second lower arm members may each be of an open channel construction with a width extending between a pair of outer sidewalls. One end of each lower arm member may be connected to the base plate. First and second upper arm members may each be of an open channel construction having a width extending between a pair of outer sidewalls. One end of each outer one end may be connected to the support bracket assembly. First and second trunnions may connect the upper arms with the lower arms. Each of the trunnions may include a bore. A rotatable shaft member may extend into the bores of the first and second trunnions.

대표청구항 ▼

1. A scissor jack assembly comprising: a base member for resting the jack assembly against a supporting surface;a support bracket assembly;first and second lower arm members each of an open channel construction having a width extending between a pair of outer sidewalls, where one end of each lower a

1. A scissor jack assembly comprising: a base member for resting the jack assembly against a supporting surface;a support bracket assembly;first and second lower arm members each of an open channel construction having a width extending between a pair of outer sidewalls, where one end of each lower arm member is connected to said base member;first and second upper arm members each of an open channel construction having a width extending between a pair of outer sidewalls, where one end of each outer one end is connected to said support bracket assembly;first and second trunnions connecting said upper arms with said lower arms at ends opposite the base member and the support bracket assembly respectively, each said trunnion including a bore; and,a rotatable shaft member extending into the bores of said first and second trunnions;wherein each of the upper and lower arm members taper in width as each arm generally narrows in width as each arm extends toward connection with either the first or second trunnion, and wherein each of the upper and lower arm members include one or more strengthening embossments positioned along a ridge extending laterally inwardly from the sidewalls of each of the upper and lower arm members respectively. 2. The scissor jack assembly of claim 1, wherein each of the embossments of the upper and lower arm members include a plurality of teeth located at the end of each such member connecting to said base member or said support bracket assembly, each of the plurality of teeth being angularly biased to a sidewall of the base member or a sidewall of the support bracket assembly to which each arm member is respectfully connected. 3. The scissor jack assembly of claim 2 where the teeth of the each of the embossments of the upper and lower arm members are of varying width. 4. The scissor jack assembly of claim 2, further comprising at least one reinforcement gear having reinforcement teeth corresponding to the teeth of an associated one of said embossments. 5. The scissor jack assembly of claim 4 where at least one of the first and second arms is connected to the support bracket assembly by a shaft of the reinforcement gear. 6. The scissor jack assembly of claim 1 where the first and second arms are connected to the support bracket assembly by at least one rivet. 7. A scissor jack assembly comprising: a base member for resting the jack assembly against a supporting surface;first and second lower arm members each of an open channel construction having a width extending between a pair of outer sidewalls, where one end of each lower arm member is connected to said base member;first and second upper arm members each of an open channel construction having a width extending between a pair of outer sidewalls, wherein each of the upper arm members includes at least one embossments positioned along a ridge extending laterally inwardly from the sidewalls of each of the first and second upper arm members respectively that engage each other;first and second trunnions connecting said upper arms with said lower arms; anda support bracket assembly where one end of each outer one end is connected to said support bracket assembly. 8. The scissor jack assembly of claim 7, wherein the embossments engage each other proximate to the support bracket assembly. 9. The scissor jack assembly of claim 7, wherein each of the upper and lower arm members taper in width as each arm generally narrows in width as each arm extends toward connection with either the first or second trunnion. 10. The scissor jack assembly of claim 7, wherein each of the embossments include a plurality of teeth located at the end of each upper arm member, the pluralities of teeth engaging each other. 11. The scissor jack assembly of claim 10, wherein each of the plurality of teeth are angularly biased toward a sidewall of the support bracket assembly. 12. The scissor jack assembly of claim 7 where the teeth of the each of the upper arm members are of varying width. 13. The scissor jack assembly of claim 7, further comprising at least one reinforcement gear having reinforcement teeth corresponding to the teeth of an associated one of said embossments. 14. The scissor jack assembly of claim 13 where at least one of the first and second upper arms is connected to the support bracket assembly by a shaft of the reinforcement gear. 15. The scissor jack assembly of claim 7 where the first and second upper arms are connected to the support bracket assembly by at least one rivet. 16. The scissor jack assembly of claim 13 where the first and second upper arms are connected to the support bracket assembly by at least one rivet and the at least one reinforcement gear is mounted to said rivet. 17. A scissor jack assembly comprising: a base member for resting the jack assembly against a supporting surface;first and second lower arm members each of an open channel construction having a width extending between a pair of outer sidewalls, where one end of each lower arm member is connected to said base member, wherein each of the lower arm members includes at least one embossments positioned along a ridge extending laterally inwardly from the sidewalls of each of the first and second upper arm members respectively and that engage each other;first and second upper arm members each of an open channel construction having a width extending between a pair of outer sidewalls;first and second trunnions connecting said upper arms with said lower arms; anda support bracket assembly where one end of each outer one end is connected to said support bracket assembly. 18. The scissor jack assembly of claim 17, wherein the embossments engage each other proximate to the base member. 19. The scissor jack assembly of claim 17, wherein each of the upper and lower arm members taper in width as each arm generally narrows in width as each arm extends toward connection with either the first or second trunnion. 20. The scissor jack assembly of claim 17, wherein each of the embossments include a plurality of teeth located at the end of each lower arm member, the pluralities of teeth engaging each other. 21. The scissor jack assembly of claim 20, wherein each of the plurality of teeth are angularly biased toward a sidewall of the base member. 22. The scissor jack assembly of claim 17 where the teeth of the each of the lower arm members are of varying width. 23. The scissor jack assembly of claim 17, further comprising at least one reinforcement gear having reinforcement teeth corresponding to the teeth of an associated one of said embossments. 24. The scissor jack assembly of claim 23 where at least one of the first and second lower arms is connected to the base member by a shaft of the reinforcement gear. 25. The scissor jack assembly of claim 17 where the first and second lower arms are connected to the base member by at least one rivet. 26. The scissor jack assembly of claim 23 where the first and second lower arms are connected to the base member by at least one rivet and the at least one reinforcement gear is mounted to said rivet.