US3740090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety lock assembly
Assignee: Individual
•
Filing: 1971-09-29
•
Granted: 1973-06-19
•
Expires: 1991-09-29
Abstract
Abstract A safety lock assembly for locking together in a predetermined relative position two members which are arranged for movement relative to one another, displacement means being provided for moving the members relative to one another out of the predetermined position and the safety lock assembly being normally maintained in a locking position and being arranged for movement out of the locking position under the influence of driving means, the driving means and displacement means being connected to a common power source and the driving means being actuated when the power from the source is lower than that required for actuating the displacement means.
Inventors
- 👤 E Lynde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:10
CPC Classifications
B; B62; B62D; B62D33/00; B62D33/06; B62D33/063; B62D33/067; B62D33/07; B62D33/071; B60; B60P; B60P1/00; B60P1/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
281 words
For locking a tilt mounted cab which is movable with respect to a truck frame on which said cab is mounted for pivotal movement relative thereto, a safety lock assembly mounted for locking said cab in a predetermined position relative to said truck frame, said assembly comprising: support means rigidly connectable to said truck frame; a locking bolt mounted on said support means for movement relative thereto between a first position in which it locks said cab in said predetermined position and a second position in which it offers no impediment to movement of said cab away from said predetermined position; passive biasing means connected between said support means and said locking bolt for normally urging said bolt into its said first position; active driving means connected to said locking bolt and arranged to be actuated for overcoming the biasing force produced by said biasing means so as to move said locking bolt into its said second position; a first mount rigidly connected to said truck frame; a second mount rigidly connected to said cab to be disposed directly above said first mount; a resilient, elastic bushing permanently connected to one of said mounts and arranged to contact the other of said mounts when said cab is in its lowered position; and bolt engaging means mounted on one said mount and having a portion disposed to lie in the path of travel of said locking bolt when said cab is in its lowered position and said bolt is in its said second position and said bolt being arranged for deflecting said engaging means so as to compress said bushing between said mounts as said bolt moves into its said first position.
Claim 2
Dependent Claim
281 words
For locking a tilt mounted cab which is movable with respect to a truck frame on which said cab is mounted for pivotal movement relative thereto, a safety lock assembly mounted for locking said cab in a predetermined position relative to said truck frame, said assembly comprising: support means rigidly connectable to said truck frame; a locking bolt mounted on said support means for movement relative thereto between a first position in which it locks said cab in said predetermined position and a second position in which it offers no impediment to movement of said cab away from said predetermined position; passive biasing means connected between said support means and said locking bolt for normally urging said bolt into its said first position; active driving means connected to said locking bolt and arranged to be actuated for overcoming the biasing force produced by said biasing means so as to move said locking bolt into its said second position; a first mount rigidly connected to said truck frame; a second mount rigidly connected to said cab to be disposed directly above said first mount; a resilient, elastic bushing permanently connected to one of said mounts and arranged to contact the other of said mounts when said cab is in its lowered position; and bolt engaging means mounted on one said mount and having a portion disposed to lie in the path of travel of said locking bolt when said cab is in its lowered position and said bolt is in its said second position and said bolt being arranged for deflecting said engaging means so as to compress said bushing between said mounts as said bolt moves into its said first position.
Claim 3
Dependent Claim
23 words
An arrangement as defined in claim 1 wherein there are two locking bolts, each disposed to a respective side of said truck frame.
Claim 4
Dependent Claim
55 words
An arrangement as defined in claim 2 wherein said driving means comprises a linkage arrangement for moving said bolts into their said second position by moving them toward one another and for permitting said bolts to move into their said first position by moving awaY from one another under the influence of said biassing means.
Claim 5
Dependent Claim
55 words
An arrangement as defined in claim 3 wherein said linkage arrangement comprises a first linkage for moving one said bolt in the direction of the movement produced by said driving means and a second linkage for moving the other said bolt in the direction opposite to the direction of movement produced by said driving means.
Claim 6
Dependent Claim
39 words
An arrangement as defined in claim 4 wherein said first linkage comprises means for permitting the position of said one bolt to be adjusted in a direction normal to the direction of the movement produced by said driving means.
Claim 7
Dependent Claim
75 words
An arrangement as defined in claim 1 wherein said driving means are composed of a fluid operated ram unit having a driven member connected to said bolt, and further comprising: fluid operated displacement means connected between said tilt mounted cab and truck frame for producing relative movement therebetween; and a fluid pressure source connected to said displacement means for controlling the movement produced thereby and connected to said ram unit for driving said driven member.
Claim 8
Dependent Claim
43 words
An arrangement as defined in claim 6 wherein said driven member of said ram unit is arranged to overcome the biassing force of said biassing means when the fluid pressure from said source is lower than that required for actuating said displacement means.
Claim 9
Dependent Claim
90 words
An arrangement as defined in claim 1 further comprising: movement producing means connected between said tilt mounted cab and said truck frame; a driving power source connected to said driving means for producing a first force sufficient to move said locking bolt into its said second position and connected to said movement producing means for producing a second force sufficient to move said first member away from said predetermined position, the power from said source required for producing said first force being lower than that for producing said second force.
Claim 10
Dependent Claim
18 words
An arrangement as defined in claim 1 wherein said support means are rigidly connectable to said truck frame.
References Cited (Backward Citations)
US1064582A
Cited
US2344826A
Cited
US2749175A
Cited
DE1120929B
Cited
US3163306A
Cited
US3397910A
Cited
US3504814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |